IDSBG manufactures ipads, ipads and IPHONE. Basically, it belongs to the OEM mode, and there should be no special PCB design. Basically, PCB can only be designed under the cooperation mode of JDM and ODM. As far as I know, I have done the -JDM mode of Nokia mobile phone, and the design of PCB motherboard was also done by the department of Taiwan Province Province. In fact, there are many things you can learn at Foxconn, and the threshold for entering Foxconn is also low. It's a good choice. If you have access to what you want to learn, you can certainly learn it.